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[PATCH] ARM: bitops

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Convert ARM bitop assembly to a macro.  All bitops follow the same
format, so it's silly duplicating the code when only one or two
instructions are different.

Signed-off-by: Russell King <rmk@arm.linux.org.uk>
This commit is contained in:
Russell King
2005-04-17 15:51:02 +01:00
parent 652a12ef98
commit 684f970e2f
6 changed files with 12 additions and 68 deletions
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15
arch/arm/lib/testsetbit.S
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@@ -9,21 +9,10 @@
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
#include "bitops.h"
.text
ENTRY(_test_and_set_bit_be)
eor r0, r0, #0x18 @ big endian byte ordering
ENTRY(_test_and_set_bit_le)
add r1, r1, r0, lsr #3 @ Get byte offset
and r3, r0, #7 @ Get bit offset
mov r0, #1
save_and_disable_irqs ip, r2
ldrb r2, [r1]
tst r2, r0, lsl r3
orr r2, r2, r0, lsl r3
strb r2, [r1]
restore_irqs ip
moveq r0, #0
RETINSTR(mov,pc,lr)
testop orreq, streqb